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Natalie Hershenson

on 16 January 2014

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Transcript of Tides

Physics Of Tides
Tides At Different Places
Tide mechanics is based off of the moon pulling on the earth due to gravitational attraction. Scientist call this a oceanic bulge, or in other words, a rise in the ocean height. These bulges or rises are caused on te side of the earth that is closest to the moon. Because our earth is on a 23% tilt not all parts of earth are equal in distance from the sun.
High tides occurs when a body of water is facing the moon and the moon is pulling the water toward it with gravity. Also, when the moon is pulling the mass of earth away from the water.
This normally happens ever 12 hours or so for a tide to occur (two times a day). According to scientist, it takes exactly 12 hours and 25 minutes. Within this time the Earth rotates and the moon orbits.
When the moon isn't overhead or on the opposite side of the earth, the body of water will settle back to low tide.
Day to Day
The rotation of the Earth, along with the moon's gravitational pull (and sun), causes tides to change.
Proxigean Spring Tide
Neap Tides
Spring Tides
What Causes Tides?
Natalie Hershenson and Anabel Cruz
Second Block . January 2014
Each tide will last about six hours
The equator is an imaginary line that splits the earth in half horizontally. This part of the earth is never as close to the moon as the north or south poles are. Thus, the pull from the moon is'nt as strong. This causes weak tides around the equator.
23 Degrees
Other Moons
Io is Jupiter’s innermost moon. Jupiter is _____ times bigger than Earth and scientist predict the Io is just a little bigger than Earth. On Io, there seems to be craters, like out moon. But when scientist looked closely the discovered that the craters were actually volcanoes. Jupiter, unlike Earth, pulls on it's moon. This causes tides on Io. Unlike Earth, Io's rides are not made out of water, instead they're made out of molten lava.
Green, Plannet, LLC. "Ocean Tides." Curiosity. Discovery.com. n.d. Web. 11 Jan. 2014. http://www.curiosity.discovery.com/question/tides-word
Regan, John M. "What Causes Tides?" What causes tides?Http://www.northwestwildlifeonline.com. n.d. Web. 14 Jan 2014. Http://www.nottherstwildlifeonline.com/Tides%20Article.htm
"Solar System Exploration: Planets: Jupiter: Moons: Io: Overciew." Solar System Exploration. Ed. NASA, n.d. Web 14 Jan. 2014 http://www.solarsystem.nasa.gov/planets/profile.cfm?Object=Jup_Io
"National Ocean Service." Why Do We Have Spring Tides in the Fall? N.p., n.d. Web. Jan. 2014.
"NOAA's National Ocean Service: Animation of Spring and Neap Tides." NOAA's National Ocean Service: Animation of Spring and Neap Tides. N.p., n.d. Web. Jan. 2014. http://oceanservice.noaa.gov/facts/springtide.html
"Spring, Neap & Proxigean Tides." Spring, Neap and Proxigean Tides. N.p., n.d. Web. Jan. 2014. "Spring, Neap & Proxigean Tides." Spring, Neap and Proxigean Tides. N.p., n.d. Web. Jan. 2014.
Tide is defined as the alternate rising and falling of the sea, usually twice in each lunar day at a particular place, due to the attraction of the moon and the sun.
Tides are caused by the gravitational pull of the moon and the sun on the Earth. However, the moon is the biggest contributor.
Tides are caused by the gravitational pull of the moon and the sun on the Earth.
Newton's law of universal gravitation proves the causes of tides. He states that gravitational attraction between two bodies is directly proportional to their masses and inversely proportional to the square of the distance between the forces.
Spring tides are tides that happen during full or new moons which occurs when the earth, moon, and sun are nearly aligned.

The gravitational pull of the sun is added to the pull of the moon on the earth. When this happens high tides become a little higher and low tides become a little lower than average.

Neap tides happen seven days after a spring tide when the sun and the moon are at right angles to each other, which is when the first and third quarter moon happens (half moon).

When this happens the bulge of the sun and the bulge of the moon cancel each other out which create moderate tides.

This causes the high tides to be a little lower and low tides to be a little higher.
A Proxigean Spring Tide is an usually high tide that occurs when the moon is at its closest point in its orbit to the earth and in its new or full moon phase.
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